It was 50 years ago last month that a new type of campaign commercial aired -- one devised to make President Lyndon Johnson's opponent look bad, rather than to extol his own virtues. "Daisy" only aired once, it was so controversial: the scene of a girl pulling petals off a flower crossed into one of an exploding bomb. That commercial changed the political landscape. Any inhibitions campaigns may have had in 1964 have long since vanished. Now, negative ads are the norm.

Two leading political scientists brought their expertise to Altgeld Hall Wednesday night to a full crowd of students and members of the public. Richard Hasen, University of California, Irvine and Bradley Smith, Capital University School of Law took the stage to discuss the impact of Citizens United.